iFixit introduced its iMac Mid 2011 Dual Hard Drive Kit ($69.95) last month for adding an SSD to both the 21.5-inch and 27-inch models. Meanwhile, OWC Macsales made its own kit available today for 2011 iMac users, which allows you to install any 2.5-inch Serial ATA SSD. The kit will work with most compatible SSDs, but OWC recommends its $99.97 OWC Mercury 6G SSD (up to 480GB) shown in the installation video below. As for the kit itself, it is now available through Macsales for $44.99. Here is what you will get: